CVE-2021-3613 : Security Advisory and Response

OpenVPN Connect 3.2.0 through 3.3.0 allows local users to load arbitrary dynamic loadable libraries via an OpenSSL configuration file, enabling the execution of arbitrary code with the same privilege level as the main OpenVPN process.

Understanding CVE-2021-3613

This CVE affects OpenVPN Connect versions 3.2.0 up to 3.3.0, allowing local users to exploit a vulnerability related to loading dynamic libraries.

What is CVE-2021-3613?

CVE-2021-3613 involves an issue in OpenVPN Connect versions 3.2.0 through 3.3.0 that permits local users to execute unauthorized code through dynamic library loading.

The Impact of CVE-2021-3613

The vulnerability allows attackers to run arbitrary code with the same permissions as the primary OpenVPN process, posing a significant security risk to affected systems.

Technical Details of CVE-2021-3613

This section covers specific technical details of the CVE.

Vulnerability Description

The vulnerability in OpenVPN Connect allows local users to load arbitrary dynamic loadable libraries using an OpenSSL configuration file, granting unauthorized code execution.

Affected Systems and Versions

OpenVPN Connect versions 3.2.0 through 3.3.0 are affected by this CVE.

Exploitation Mechanism

Attackers can exploit this vulnerability by leveraging a crafted OpenSSL configuration file to execute arbitrary code under the context of the main OpenVPN process.

Mitigation and Prevention

Here are the necessary steps to mitigate and prevent exploitation of CVE-2021-3613.

Immediate Steps to Take

It is recommended to update OpenVPN Connect to a patched version that addresses this vulnerability. Additionally, restrict access to vulnerable systems to authorized users only.

Long-Term Security Practices

Implement secure coding practices, regularly update software, and enforce the principle of least privilege to enhance overall system security.

Patching and Updates

Regularly apply patches and updates provided by the vendor to address security vulnerabilities and protect systems from potential exploits.